Answer:
a = 7
Step-by-step explanation:
I think, what you need to do, is first understand how to find the mean of anything: It's quite simple, actually, just add up all the numbers, then divide that number by the number of numbers. So, let's put it in perspective:
10, 3, 4, a, 6, 9, 10
7 is the mean. 7 is the number of numbers.
If, to find the mean is: 10 + 3 + 4 + a + 6 + 9 + 10= 7a ÷ 7, then: 10 +3 + 4+ 6 + 9 +10= 42
42 plus what divided by 7 is the question now.
42 + a ÷ 7= 7
So, 7 times 7, that's 49 minus 42 and you've got your answer: 7
Answer:
The value of x is 
Step-by-step explanation:
we know that
Applying the tangent-secant theorem
substitute the values and solve for x
using a graphing tool
to solve the quadratic equation
The solution is 
see the attached figure
Answer:
it looks like y int is about 2550
Step-by-step explanation:
12 oz box o rice divided by 1.93 = 16 cents per oz
6 oz box o rice divided by .90 = 15 cents per oz
9 oz box o rice divided by 1.25 = 13 cents per oz.
The third option is the most cheapest.
Hope this helps!!!
